http://hl7.org/fhir/StructureDefinition/patient-birthPlace|4.0.1

The registered place of birth of the patient. A sytem may use the address.text if they don't store the birthPlace address in discrete elements.
typedestination
baseDefinitionhttp://hl7.org/fhir/StructureDefinition/Extension
typehttp://hl7.org/fhir/StructureDefinition/Extension
Extension.value[x].typehttp://hl7.org/fhir/StructureDefinition/Address